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Related Concept Videos

Schizophrenia01:17

Schizophrenia

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Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those...
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Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

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Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
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Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes...
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Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

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Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
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Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

Positive Symptoms Schizophrenia: Hallucinations and Delusions

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Schizophrenia is a complex psychiatric disorder characterized by a range of symptoms that significantly impact cognition, behavior, and emotional regulation. Among these, the positive symptoms stand out as they involve the addition or exaggeration of normal mental functions, deviating markedly from typical behavior and perception. Hallucinations and delusions are prominent positive symptoms, each profoundly affecting the individual's experience of reality.
Hallucinations
Hallucinations in...
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Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

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Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
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Accessory Structures of the Eye01:17

Accessory Structures of the Eye

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Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...
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Investigating the Effects of Antipsychotics and Schizotypy on the N400 Using Event-Related Potentials and Semantic Categorization
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Schizophrenia and the eye.

Steven M Silverstein1, Richard Rosen2

  • 1Rutgers Biomedical and Health Sciences.

Schizophrenia Research. Cognition
|September 9, 2015
PubMed
Summary
This summary is machine-generated.

Schizophrenia patients show eye abnormalities, including retinal changes, contributing to visual processing issues. Certain retinal findings may serve as biomarkers for neural pathology and disease progression.

Keywords:
ERGMaculaOCTPerceptionRetinaSchizophreniaVision

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Psychiatry

Background:

  • Visual processing impairments are common in schizophrenia.
  • The origin of these impairments (eye vs. brain) remains unclear.
  • Retinal changes are known in other neurological disorders and correlate with cognitive function.

Purpose of the Study:

  • To review the contribution of ocular structures, particularly the retina, to visual processing deficits in schizophrenia.
  • To assess the potential of retinal abnormalities as biomarkers for schizophrenia.
  • To explore the clinical utility of retinal changes in schizophrenia.

Main Methods:

  • Literature review of studies on ocular and retinal abnormalities in schizophrenia and high-risk states.
  • Analysis of evidence linking retinal findings to visual and cognitive impairments.
  • Evaluation of retinal abnormalities as potential biomarkers.

Main Results:

  • Multiple ocular and retinal disturbances are observed in schizophrenia, including retinal venule widening, nerve fiber layer thinning, dopaminergic abnormalities, and abnormal electroretinography (ERG) responses.
  • These findings may be illness-related, medication-induced, or due to comorbidities.
  • Widened retinal venules, thin retinal nerve fiber layers, and abnormal ERG amplitudes show promise as biomarkers for neural pathology and disease progression.

Conclusions:

  • Ocular and retinal pathologies significantly contribute to visual and cognitive disturbances in schizophrenia.
  • Specific retinal findings, such as widened venules and abnormal ERG, can serve as valuable biomarkers.
  • Further research into retinal changes offers untapped clinical utility for schizophrenia management.